Suppression of Rayleigh induced noise in an interferometric sensor system employing pulsed heterodyne interrogation is demonstrated through a combination of coherence modulation and frequency shifting of noise within the sampling bandwidth. >40dB suppression is achieved.
© 2008 Optical Society of America
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(290.0290) Scattering : Scattering
(290.1350) Scattering : Backscattering
E. Rønnekleiv, O. H. Waagaard, D. Thingbø, and S. Forbord, "Suppression of Rayleigh Scattering Noise in a TDM Multiplexed Interferometric Sensor System," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OMT4.
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